question_answer

What is the region in the interior of a circle enclosed by an arc on one side and a pair of radii on the other two sides called?

A) A segment        

B) A semi-circle

C) A sector               

D) A chord

Correct Answer: C

Solution :

 A sector is the region in the interior of a circle enclosed by an arc and a pair of radii. In the given circle, the region OAB is a sector.